Granted Patent
Utility
US 4,220,806 · App. 06/032,611
Plural stages of hydrofluoric acid alkylation utilizing separated acid phase as catalyst in the subsequent stage
Inventors:
Michael Z. Mikulicz, James F. Himes
Patented Case
View Patent ↗
Granted: Sep 2, 1980
Filed: Apr 23, 1979
Inventors
Michael Z. Mikulicz
James F. Himes
Assignee (at issue)
UOP LLC
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.